Question:
A diamagnetic substance is placed in a magnetic field of a bar magnet. Then it is
A diamagnetic substance is placed in a magnetic field of a bar magnet. Then it is
Updated On: Jun 23, 2023
- repelled by magnet
- attracted by magnet
- attracted by S-poles and repelled by N-pole
- attracted by N-pole and repelled by S-pole
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The Correct Option is A
Solution and Explanation
Diamagnetic substances are feebly repelled by a magnet, when placed in a magnetising field they are feebly magnetised in a direction opposite to that of the field. This is due to negative susceptibility of diamagnetic substance.
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Concepts Used:
Magnetism & Matter
Magnets are used in many devices like electric bells, telephones, radio, loudspeakers, motors, fans, screwdrivers, lifting heavy iron loads, super-fast trains, especially in foreign countries, refrigerators, etc.
Magnetite is the world’s first magnet. This is also called a natural magnet. Though magnets occur naturally, we can also impart magnetic properties to a substance. It would be an artificial magnet in that case.
Read More: Magnetism and Matter
Some of the properties of the magnetic field lines are:
- The lines and continuous and outside the magnet, the field lines originate from the North pole and terminate at the South pole
- They form closed loops traversing inside the magnet.
- But here the lines seem to originate from the South pole and terminate at the North pole to form closed loops.
- More number of close lines indicate a stronger magnetic field
- The lines do not intersect each other
- The tangent drawn at the field line gives the direction of the field at that point.